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      1 The following is an example of the readdist.d script,
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      4 Here the readdist.d script is run for a few seconds, then Ctrl-C is hit,
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      6    # readdist.d
      7    dtrace: description 'sysinfo:::readch ' matched 4 probes
      8    ^C
      9    [...]
     10      gnome-terminal
     11               value  ------------- Distribution ------------- count
     12                  16 |                                         0
     13                  32 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@   15
     14                  64 |@@@                                      1
     15                 128 |                                         0
     16    
     17      Xorg
     18               value  ------------- Distribution ------------- count
     19                  -1 |                                         0
     20                   0 |@@@@@@@@@@@@@@@@@@@                      26
     21                   1 |                                         0
     22                   2 |                                         0
     23                   4 |                                         0
     24                   8 |@@@@                                     6
     25                  16 |@                                        2
     26                  32 |@                                        2
     27                  64 |                                         0
     28                 128 |@@@@@@@@                                 11
     29                 256 |@@@                                      4
     30                 512 |                                         0
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     32 This allows us to understand the read behaviour of each process. The
     33 Xorg command has executed 26 reads that returned 0 bytes, through
     34 to 4 reads that were at least 256 bytes (up to 511). 
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